Abstract

We report a fiber inline Mach-Zehnder-type core-cladding-mode interferometer fabricated by two-point CO2 laser irradiations on a single-mode fiber. the laser irradiations caused efficient light coupling from the core mode to the lower order cladding modes and vice versa. High-quality interference spectra with a fringe visibility of about 20 dB were observed for four different interferometer lengths (5, 10, 20, and 40 mm). the temperature sensitivity of the device with a length of 5 mm was measured to be 0.0817 nm/°C. the sensitivity for refractive index measurement of the device was comparable with a long-period fiber grating of LP04 cladding mode. © 2009 IEEE.

Department(s)

Electrical and Computer Engineering

Comments

National Science Foundation, Grant CMMI-0825942

Keywords and Phrases

CO laser 2; Fiber-optic sensor; Mach-Zehnder (MZ) interferometer

International Standard Serial Number (ISSN)

1041-1135

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.

Publication Date

15 May 2009

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